Mixed discretization procedure for accurate modelling of plastic collapse
作者:
Joaquin Marti,
Peter Cundall,
期刊:
International Journal for Numerical and Analytical Methods in Geomechanics
(WILEY Available online 1982)
卷期:
Volume 6,
issue 1
页码: 129-139
ISSN:0363-9061
年代: 1982
DOI:10.1002/nag.1610060109
出版商: John Wiley&Sons, Ltd
数据来源: WILEY
摘要:
AbstractCollapse loads are overestimated by finite‐element or finite‐difference procedures when the material discretization does not allow locally incompressible plastic flow: for example, constant‐strain triangles or tetrahedra give unacceptable results. The use of different discretizations for the isotropic and deviatoric parts of the strain tensor is advocated for preventing this problem. The technique can be easily implemented in existing two‐ and three‐dimensional computer programs. Its effectiveness is demonstrated by several
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